ENZYME entry: EC 2.4.1.371

Accepted Name

polymannosyl GlcNAc-diphospho-ditrans,octacis-undecaprenol 2,3-alpha- mannosylpolymerase

Reaction catalysed

[alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->2)-alpha-D-Man-(1->2)](n)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-GlcNAc-di-trans,octa-cis-undecaprenyl diphosphate + 2 GDP-alpha-D-mannose <=> alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-[alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->2)-alpha-D-Man-(1->2)](n)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-GlcNAc-di-trans,octa-cis-undecaprenyl diphosphate + 2 GDP + 2 H(+)
alpha-D-Man-(1->2)-alpha-D-Man-(1->2)-[alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->2)-alpha-D-Man-(1->2)](n)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-GlcNAc-di-trans,octa-cis-undecaprenyl diphosphate + 2 GDP-alpha-D-mannose <=> [alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->2)-alpha-D-Man-(1->2)](n+1)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-Man-(1->3)-alpha-D-GlcNAc-di-trans,octa-cis-undecaprenyl diphosphate + 2 GDP + 2 H(+)

Comment(s)

The enzyme is involved in the biosynthesis of polymannose O-polysaccharide in the outer leaflet of the membrane of Escherichia coli serotype O9a.
The enzymes consists of two domains that are responsible for the 1->2 and 1->3 linkages, respectively.

Cross-references

BRENDA

EC2PDB

ExplorEnz

PRIAM enzyme-specific profiles

KEGG Ligand Database for Enzyme Nomenclature

IUBMB Enzyme Nomenclature

IntEnz

MEDLINE

MetaCyc

Rhea expert-curated reactions

UniProtKB/Swiss-Prot

Q47593, WBDA2_ECOLX

M4QN28, WBDA_ECOLX

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.-.-.-